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revision 1.811 by mlosch, Wed May 9 14:32:05 2007 UTC revision 1.867 by mlosch, Fri Aug 31 14:06:57 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: change a discretization detail to make the B-grid code
8      "more symmetric". This change is likely to remove all "ridges/leads" that
9      where quasi-aligned with the grid in B-grid solutions. It may also be
10      the solution to the stress coupling issues with the B-grid.
11    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
12      remove .cvsignore from input dir. (since testreport no longer run here).
13    o pkg/thsice:
14     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
15     - fix reshaping of sea-ice just after advection:
16       melt all the ice only if ice-volume is too small.
17     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
18       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
19     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
20    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
21      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
22    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
23      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
24      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
25      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
26      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
27      -> update output.txt
28    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
29     this affects truncation error: -> update output.txt of exp:
30      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
31      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
32    
33    checkpoint59f
34    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
35    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
36      a bounded range (in forward mode)
37    o pkg/ecco, ctrl, autodiff and mom_common:
38     internal parameter controls, completements of implementations
39    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
40    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
41      (not seem any difference in testing results).
42    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
43       at face corners.
44    o pkg/generic_advdiff:
45     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
46      loop range indices for computing vertical advection tendency
47      and do the calculation in the interior only (no overlap) ;
48      for now, only implemented for SOM advection (to save CPU time).
49     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
50    o exch2 adjoint
51      First set of changes:
52      - add exch2 hand-written adjoint templates
53      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
54        This will require cleanup in pkg/autodiff/*.F
55        (changed routines currently kept separate in verif. code/)
56      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
57        that used to hide exch2 or cubed-sphere specific code
58        (commented via 'cph-exch2')
59    o pkg/seaice
60      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
61    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
62       output of global_ocean.cs32x15.thsice .
63    
64    checkpoint59e
65    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
66      for B-grid vector (not yet tested) and C-grid vector (<- only used
67      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
68    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
69      (#ifdef ALLOW_SALT_PLUME)
70    o gather_2d/scatter_2d: removed halo regions
71    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
72      scheme and the corresponding test case (under front_relax dir). For now,
73      only available with Skew-flux form and not yet tested in realistic set-up.
74      adjoint: store directives updated, but gradient checks deteriorated,
75      so maybe GM/Redi adjoint is now broken.
76    o seaice adjoint
77      * add AREA, HEFF, HSNOW as control variable
78        (should not change lab_sea results)
79      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
80    o pkg/seaice:
81      * added computation of saltFlux in seaice_growth;
82        For time being, sea ice salinity is assumed constant
83        contribution of snow flooding to freshening of sea ice is neglected.
84        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
85        defaults to 0.0 in order to maintain backward compatibility.
86        Typical values for SEAICE_salinity are 4 to 10 g/kg.
87      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
88      * added SEAICE_availHeatFrac, which specifies fraction of surface level
89        heat content used to melt or grow ice
90      * commented out cap of HICE: it helps keep ice thinner
91      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
92      * applied OBCS T/S mask to HEFFM sea ice mask
93    
94    checkpoint59d
95    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
96     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
97     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
98    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
99     and change default value of parameter "GM_Small_Number";
100     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
101       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
102       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
103    o pkg/ecco: cost function when applying pkg/smooth to controls
104    o pkg/ctrl: add forcingPrecond run time parameter
105    o pkg/seaice:
106     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
107     - fix bug in metric terms of u-equation in LSR solver (implicit part),
108       changes verification/lab_sea
109     - rearrange implicit part of u-equation in LSR solver to make it easier to
110       read, understand, and debug. This causes changes at the truncation level.
111     - fix (serious) bug in the boundary conditions (sign error in the implicit
112       part) of the LSR solver. Changes all LSR results.
113     - fixed problem with HSNOW initialization to avoid thick snow when AREA
114       is initilized with small values - does not change lab_sea results.
115     - added HsnowFile initialization capability
116    o pkg/smooth: addition to model/src and pkg/ctrl so allow
117     initialization of pkg/smooth and application to control vector
118    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
119    o dependencies: pkg/profiles requires pkg/cal
120    o pkg/profiles:
121     - added option ALLOW_PROFILES_GENERICGRID
122         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
123         that interpolation information (grid points and coefficients) is provided
124         within the netcdf input files.
125         -> sample matlab scripts can be found in MITgcm_contrib/gael
126         that allow you to prepare netcdf input files.
127     - also modified: cleaner include statements, cleaner error print statements,
128       cleaner stops when error, and more tests of the netcdf input files consistency.
129    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
130    o pkg/seaice:
131     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
132       requires a new routine: seaice_diagnostics_fill.F
133     - make sure that seaice does not move if not forced (pressure replacement
134       method, Hibler and Ip, 1995), changes results
135     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
136     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
137       It is turned off by default (=-1.), because it changes the results.
138     - make it possible to read AREA from a file, too.
139    
140    checkpoint59c
141    o add S/R and diagnostics for oceanic mixed-layer depth
142    o move GMRedi call after all vertical mixing schemes (including KPP)
143    o pkg/thsice:
144     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
145      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
146    o pkg/obcs:
147     - bug fix for balance code
148    o pkg/seaice:
149      - allow values of SEAICE_elasticParm > 1
150      - add new parameter SEAICE_evpTauRelax as an alternative
151        to SEAICE_elasticParm
152      - make lsr boundary conditions free slip (by default), changes result
153      - add code for no slip boundary conditions for lsr
154      - set minimum of zeta to zero (and not 4e8) (changes results)
155      - add a cap on AREA after advecting AREA if seaice_growth is not called
156    o change calculation of Visbeck K:
157      - no longer depend on tapering scheme; instead, compute slope (limited
158        by GM_maxSlope). this is equivalent to what was comuted before with
159        clipping or linear tappering.
160      - fix vertical averaging (wrong by 1/2 level)
161      - leave the old version (but will not be maintained) within
162        #ifdef OLD_VISBECK_CALC / #endif
163      - update output of exp. ideal_2D_oce
164    o change error catch in calc_r_star to improve vectorization
165    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
166      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
167    o adjoint:
168      Re-organized adjoint checkpointing according to Matt Mazloff
169      (but with modifs/completions/cleanups)
170      Storing is now bundled into large arrays to optimized I/O
171      (and second step in cleanup of the_main_loop)
172    
173    checkpoint59b
174    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
175      - export/import (between ocean & coupler) fields needed for ocean DIC.
176    o pkg/seaice:
177      - get rid of three more exchanges seaice_calc_viscosities (required
178        different loop boundaries in seaice_lsr and seaice_ocean_stress)
179      - bug fix in seaice_ocean_stress (update of lab_sea required)
180      - reduce loop boundaries to necessary minimum also in seaice_evp
181      - go back to the old way of computing deltaC/Z as the adjoint likes that
182        better
183    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
184      passive tracer to an Age Tracer) + update output.txt
185    o pkg/exf:
186      - implement A-grid / C-grid selection for wind-stress input files.
187      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
188      for now, in exf_bulk_largeyeager04.F only :
189      - change implementation for case where windspeed + 2. components wind-stress
190        are read-in. AND use rhoConstFresh to convert evap.
191    o pkg/seaice:
192      - use correct EXCH_UV for wind-forcing (on A-grid).
193      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
194        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
195    o pkg/exf:
196      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
197      EXF_INTERPOLATION:
198      - merge global_with_exf/code version of exf_interp_read.F
199        to the main code ;
200      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
201        reading the file ; Important: This options needs to be defined to recover
202        previous code.
203        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
204      - no longer loose real*8 precision along the way when using exf_iprec=64.
205  o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)  o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
206      - change discretisation of evp-solver in order to avoid another exchange
207        (changes lab_sea) and clean up a little
208      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
209        help the adjoint (this also changes the results slightly)
210      - add a few "_d 0" where they had been missing in seaice_evp.F
211      - cleaning up: remove unused seaice_calc_rhs.F
212  o pkg/exf: some cleaning-up:  o pkg/exf: some cleaning-up:
213    - change various "constants" into runtime parameters    - change various "constants" into runtime parameters
214    - cleaned-up Large&Yeager04 routine which should eventually    - cleaned-up Large&Yeager04 routine which should eventually
# Line 18  o pkg/exf: some cleaning-up: Line 222  o pkg/exf: some cleaning-up:
222  o pkg/thsice:  o pkg/thsice:
223   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
224    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
225    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
226    and in thsice_extend.F:    and in thsice_extend.F:
227    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
228    - start to form ice as soon as the minimum ice-volume is reachable.    - start to form ice as soon as the minimum ice-volume is reachable.
# Line 34  o pkg/kpp Line 238  o pkg/kpp
238  o pkg/seaice  o pkg/seaice
239   - check for inconsistent evp parameter/cpp-flag combination   - check for inconsistent evp parameter/cpp-flag combination
240   - remove leftover errIO flat for obsolete name list error handling   - remove leftover errIO flat for obsolete name list error handling
241    o OpenAD
242     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
243    
244  checkpoint59a  checkpoint59a
245  o pkg/seaice: some parameter clarifications and a little bit of clean up  o pkg/seaice: some parameter clarifications and a little bit of clean up

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